Safety-pin.



PATENTED DEC. 10, 1907.

L. G. WIOKS. SAFETY PIN. APPLICATION FILED AUG. 14, 1905.

ms NORRIS Pmsks cm, wasmmmm. n c.

LOUIS G. WIGKS, OF PITTSBURG, PENNS YLVANIA.

SAFETY-PIN.

Specification of Letters Patent.

Patented Dec. 10, 1907.

Application filed August 14. 1905. $eria1No. 274-137.

To all whom it may concern:

Be it known that I, LOUIS C. Wroxs, citizen of the United States of America,residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Safety- Pins, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to certain new and useful improvements in safety pins, and the invention has for its object the provision of a novel form of pin having a particular form-of locking means, which will insure a perfect locking of the pins in engagement with a piece of fabric or material in which it is placed.

Another object of this invention is to provide a pin which will permit of its expansion without becoming disengaged from the piece of material to whlch it is fastened.

Briefly described, my improved pin is preferably formed of a piece of wire which is bent upon itself forming two resilient clamping pieces, and the end of one of these pieces is bent to form a hook, while the other piece is provided with a substantially spearshaped head which is adapted to engage in the hook and hold the two pieces together.

The above construction will be hereinafter more fully described and then specifically pointed out in the claims, and referring to the drawing accompanying this application, like numerals of reference designate corresponding parts throughout the several views, in which Figure 1 is a side elevation of my improved safety pin, Fig. 2 is a plan, Fig. 3 is a perspective view of the pin, the hood thereof being removed, Fig. 4 is an enlarged detail plan view of a portion of the pin illustrating the spear-shaped head thereof, Fig. 5 is a side elevation of the same. To put my invention into practice, I construct my improved safety pin of a piece of wire or resilient material of a suitable length, the length of the wire depending upon the size of the pin to be constructed. T e piece or wire employed is bent to form a coil 1, and the ends 2 and 3 of the wire are bent in planes substantially parallel, as clearly illustrated in Figs. 1 and 3 of the drawing. The end 2 of the wire is bent downwardly as at 4 forming avertically disposed hook 5. The outer face of this hook is flattened as at 6, and the extreme end of the hook is cut away as at 7,

to permit of easy access being had to the slot 8 of said hook.

The end 3 of the wire is gradually tapered as at 9, and is provided with a rounded head 10 having rounded shoulders 11, 11. This head is slightly smaller than the area of the wire in cross section, and the end 3 of the wire is adapted to rest in the'slot 8 of the hook 5 when the pin is closed, or in a locked position.

By referring to Fig. 3 of the drawing, it will be observed that the rounded head 10 of the pin extends slightly beyond the hook 5, when the pin is closed, and'this position of the end 3 of the wire permits of the wire bending relative to the end 2 of the wire, the movement of the end 3 being limited when the head 10 abuts against the flattened surface 6 of the hook 5.

That portion of the longer arm 2 that is bent at right angles to the arm and then given a return bend so as to form the hook is made substantially square in cross section and the position of the prong adjacent to the head 10 is provided with flat faces as will be observed by reference to Fig. 3 of the drawings. By providing flat faces on the hook and on the pin a greater frictional contact surface for the pin or prong member is provided than would obtain if the pin and hook were round at the point where they engaged. The pin or prong member is therefore held more snugly in the hook and prevented from lateral movement.

In connection with the pin just described, I may employ a conventional form of hood 12 for closing the hook shaped end 5 of the pin and shielding the rounded head 10 of the pin,

when the pin is closed or in engagement with a piece of fabric or material.

The main member of the hook end of the pin and the return bend 22 of the same are each bent outwardly in parallel planes extending in the direction of the length of the pin as designated at 21, 22, these bends in the hook end providing for the removal of the pin roper, that is the portion that car ries the ead 27, from the slot 26, which removal is'effected by bendin down the portion of the pin that carries t e head 27 until it is opposite the bends 21, 22 and then moving it to one side or the other until it is at a position where it is free to rise without f ed at one end by a coil of the Wire, one of said arms exceeding the other in length and having its free end bent at right angles to the body of the arm and having said bent portion substantially square in cross section, and passed around the other arm and given a return bend to form a hook, the other arm constituting the prong of the safety pin being reduced in diameter adjacent its free -end having flattened faces engaging the flattened faces of the hook member and having a head on said free end, the headed end extending 

